Question

An interesting act performed at a variety show is to swing a bucket of water in a vertical

circle such that water does not spill out while the bucket is inverted at the top of the

circle. Derive the expression for minimum speed of the bucket at the top of the circle in

terms of its radius R. Calculate the speed if the diameter of circle is 1.5 m.

(See Lesson 4)​

Answer 1

ANSWER

Arm exerts a force to turn the bucket - which is the centripetal force. a centrifugal force acts on the rotating body which pins the water to the bucket( quite like in a car). now if the centrifugal force is greater than the force of gravity. your water will remain in the bucket when it's above your head.

The force created by the circular swinging motion mimics that of gravity, which is what keeps the water in the bucket in the first place.